#include <bits/stdc++.h>

using namespace std;

int main() {
  vector<int> cnts(10, 0);
  int n;
  cin >> n;
  for (int i = 0; i < n; ++i) {
    int a, b, c, d;
    cin >> a >> b >> c >> d;
    string r;
    cin >> r;
    if (r == "YES") {
      cnts[a]++;
      cnts[b]++;
      cnts[c]++;
      cnts[d]++;
    } else {
      cnts[a]--;
      cnts[b]--;
      cnts[c]--;
      cnts[d]--;
    }
  }

  int ans = max_element(cnts.begin(), cnts.end()) - cnts.begin();
  cout << ans << '\n';
  return 0;
}